1. Working voltage: DC 5V2. Working current 7-12MA3. One power indicator light, four water level indicator lights4. Four water level output interfaces (low level 0V, high level 3.7V),for MCU IO5. Four water level sensor interfaces (2P XH2.54)Note:1. Package does not contain probe (wire).2P Male XH2.54mm Pitch Wire Cable can be used as a probe,which can be prepared by yourself.2. For safety, use an DC power supply with good isolationApplication:for Arduiuo NANO IOfor FPGA/CPLD ARM STM32Home water tower automatic water supply systemAquarium Fish tank Water Changer SystemFill the water tower automaticallyAutomatic pumping from water towerConductive liquid automatic controlAutomatic feeding system for poultry and livestockFarm automatic water supply systemAnd other occasions that require automatic water supply and water exchange.Solenoid valve water pump motor automatic controlThe printing/appearance from batch to batch, but it not affect the use; the actual product may have color difference due to different light or display.Specification:with PinColour:WhiteMaterial:PCBPackage Contents:1 x DC 5V 4 Outputs Water Liquid Level Indicator BoardOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.